Summary

Congenital goitre is a known cause of hypothyroidism in newborn. Congenital goitre can be due to defective synthesis of thyroxine or administration of antithyroid drugs to the mother during pregnancy. In this case report, we report an instance of a preterm male infant with antenatally detected goitre presenting as a neck mass with congenital hypothyroidism. Hormonal replacement therapy was started immediately after birth which lead to resolution of the mass and normalisation of thyroid function.